On the Origin of the Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page v
... species - Wide- ranging , much - diffused , and common species vary most Species of the larger genera in each country vary more frequently than the species of the smaller genera Many of the species of the larger genera resemble ...
... species - Wide- ranging , much - diffused , and common species vary most Species of the larger genera in each country vary more frequently than the species of the smaller genera Many of the species of the larger genera resemble ...
Page viii
... species - On their different rates of change - Species once lost do not reappear - Groups of species follow the same general rules in their appear- ance and disappearance as do single species - On Extinction - On simultaneous changes in ...
... species - On their different rates of change - Species once lost do not reappear - Groups of species follow the same general rules in their appear- ance and disappearance as do single species - On Extinction - On simultaneous changes in ...
Page xv
... Species . Until recently the great majority of naturalists believed that species were immutable productions , and had been separately created . This view has been ably maintained by many authors . Some few naturalists , on the other ...
... Species . Until recently the great majority of naturalists believed that species were immutable productions , and had been separately created . This view has been ably maintained by many authors . Some few naturalists , on the other ...
Page xvii
... species are only a higher and more per- manent class of varieties . " He extends the same view to animals . The Dean believes that single species of each genus were created in an originally highly plastic condition , and that these have ...
... species are only a higher and more per- manent class of varieties . " He extends the same view to animals . The Dean believes that single species of each genus were created in an originally highly plastic condition , and that these have ...
Page xxi
... species undergo , from the difficulty of distinguishing species and varieties , and from the principle of general gradation , that species have been modified ; and he attributes the modification to the change of circumstances . The ...
... species undergo , from the difficulty of distinguishing species and varieties , and from the principle of general gradation , that species have been modified ; and he attributes the modification to the change of circumstances . The ...
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Common terms and phrases
accumulated adapted affinities allied species America ancient appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt Edition eggs embryo existing exterminated extinct extremely facts favourable females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ less living males mammals manner migration modified descendants natural selection naturalists nearly nest occur oceanic islands offspring organisation parent perfect pigeons pistil pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble seeds sexual sexual selection Silurian slight South America stamens sterility structure struggle successive suppose theory tion variability variations varieties vary vols whole widely